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Finding the Fourth Proportional to 172,572.36, 258,858.72 and 54,254.04

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Solution

The fourth proportional to 172,572.36, 258,858.72 and 54,254.04 is: 81,381.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,572.36 : 258,858.72 = 54,254.04 : x
  2. Step 2: Convert to fraction form
    172,572.36/258,858.72 = 54,254.04/x
  3. Step 3: Cross multiply
    172,572.36x = 258,858.72 × 54,254.04
  4. Step 4: Simplify right side
    172,572.36x = 14,044,131,349.23
  5. Step 5: Solve for x
    x = 14,044,131,349.23/172,572.36
  6. Step 6: Final answer
    x = 81,381.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.